//** Smooth Navigational Menu- By Dynamic Drive DHTML code library: http://www.dynamicdrive.com
//** Script Download/ instructions page: http://www.dynamicdrive.com/dynamicindex1/ddlevelsmenu/
//** Menu created: Nov 12, 2008

//** Dec 12th, 08" (v1.01): Fixed Shadow issue when multiple LIs within the same UL (level) contain sub menus: http://www.dynamicdrive.com/forums/showthread.php?t=39177&highlight=smooth

//** Feb 11th, 09" (v1.02): The currently active main menu item (LI A) now gets a CSS class of ".selected", including sub menu items.

//** May 1st, 09" (v1.3):
//** 1) Now supports vertical (side bar) menu mode- set "orientation" to 'v'
//** 2) In IE6, shadows are now always disabled

//** July 27th, 09" (v1.31): Fixed bug so shadows can be disabled if desired.


var ddsmoothmenu = {

    //Specify full URL to down and right arrow images (23 is padding-right added to top level LIs with drop downs):
    arrowimages: { down: ['downarrowclass', '', 0], right: ['rightarrowclass', ''] },

    transition: { overtime: 300, outtime: 300 }, //duration of slide in/ out animation, in milliseconds
    shadow: { enable: false, offsetx: 0, offsety: 0 },

    ///////Stop configuring beyond here///////////////////////////

    detectwebkit: navigator.userAgent.toLowerCase().indexOf("applewebkit") != -1, //detect WebKit browsers (Safari, Chrome etc)
    detectie6: document.all && !window.XMLHttpRequest,

    getajaxmenu: function ($, setting) { //function to fetch external page containing the panel DIVs
        var $menucontainer = $('#' + setting.contentsource[0]) //reference empty div on page that will hold menu
        $menucontainer.html("Loading Menu...")
        $.ajax({
            url: setting.contentsource[1], //path to external menu file
            async: true,
            error: function (ajaxrequest) {
                $menucontainer.html('Error fetching content. Server Response: ' + ajaxrequest.responseText)
            },
            success: function (content) {
                $menucontainer.html(content)
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    },


    buildmenu: function ($, setting) {
        var smoothmenu = ddsmoothmenu
        var $mainmenu = $("#" + setting.mainmenuid + ">ul") //reference main menu UL
        $mainmenu.parent().get(0).className = setting.classname || "ddsmoothmenu"
        var $headers = $mainmenu.find("ul").parent()
        $headers.hover(
		function (e) {
		    $(this).children('a:eq(0)').addClass('selected')
		},
		function (e) {
		    $(this).children('a:eq(0)').removeClass('selected')
		}
	)
        $headers.each(function (i) { //loop through each LI header
            var $curobj = $(this).css({ zIndex: 100 - i }) //reference current LI header
            var $subul = $(this).find('ul:eq(0)').css({ display: 'block' })
            this._dimensions = { w: this.offsetWidth, h: this.offsetHeight, subulw: $subul.outerWidth(), subulh: $subul.outerHeight() }
            this.istopheader = $curobj.parents("ul").length == 1 ? true : false //is top level header?
            $subul.css({ top: this.istopheader && setting.orientation != 'v' ? this._dimensions.h + "px" : 0 })
            $curobj.children("a:eq(0)").css(this.istopheader ? { paddingRight: smoothmenu.arrowimages.down[2] } : {}).append(
		)
            if (smoothmenu.shadow.enable) {
                this._shadowoffset = { x: (this.istopheader ? $subul.offset().left + smoothmenu.shadow.offsetx : this._dimensions.w), y: (this.istopheader ? $subul.offset().top + smoothmenu.shadow.offsety : $curobj.position().top) } //store this shadow's offsets
                if (this.istopheader)
                    $parentshadow = $(document.body)
                else {
                    var $parentLi = $curobj.parents("li:eq(0)")
                    $parentshadow = $parentLi.get(0).$shadow
                }
                this.$shadow = $('<div class="ddshadow' + (this.istopheader ? ' toplevelshadow' : '') + '"></div>').prependTo($parentshadow).css({ left: this._shadowoffset.x + 'px', top: this._shadowoffset.y + 'px' })  //insert shadow DIV and set it to parent node for the next shadow div
            }
            $curobj.hover(
			function (e) {
			    var $targetul = $(this).children("ul:eq(0)")
			    this._offsets = { left: $(this).offset().left, top: $(this).offset().top }
			    var menuleft = this.istopheader && setting.orientation != 'v' ? 0 : this._dimensions.w
			    menuleft = (this._offsets.left + menuleft + this._dimensions.subulw > $(window).width()) ? (this.istopheader && setting.orientation != 'v' ? -this._dimensions.subulw + this._dimensions.w : -this._dimensions.w) : menuleft //calculate this sub menu's offsets from its parent
			    if ($targetul.queue().length <= 1) { //if 1 or less queued animations
			        $targetul.css({ left: menuleft + "px", width: this._dimensions.subulw + 'px' }).animate({ height: 'show', opacity: 'show' }, ddsmoothmenu.transition.overtime)
			        if (smoothmenu.shadow.enable) {
			            var shadowleft = this.istopheader ? $targetul.offset().left + ddsmoothmenu.shadow.offsetx : menuleft
			            var shadowtop = this.istopheader ? $targetul.offset().top + smoothmenu.shadow.offsety : this._shadowoffset.y
			            if (!this.istopheader && ddsmoothmenu.detectwebkit) { //in WebKit browsers, restore shadow's opacity to full
			                this.$shadow.css({ opacity: 1 })
			            }
			            this.$shadow.css({ overflow: '', width: this._dimensions.subulw + 'px', left: shadowleft + 'px', top: shadowtop + 'px' }).animate({ height: this._dimensions.subulh + 'px' }, ddsmoothmenu.transition.overtime)
			        }
			    }
			},
			function (e) {
			    var $targetul = $(this).children("ul:eq(0)")
			    $targetul.animate({ height: 'hide', opacity: 'hide' }, ddsmoothmenu.transition.outtime)
			    if (smoothmenu.shadow.enable) {
			        if (ddsmoothmenu.detectwebkit) { //in WebKit browsers, set first child shadow's opacity to 0, as "overflow:hidden" doesn't work in them
			            this.$shadow.children('div:eq(0)').css({ opacity: 0 })
			        }
			        this.$shadow.css({ overflow: 'hidden' }).animate({ height: 0 }, ddsmoothmenu.transition.outtime)
			    }
			}
		) //end hover
        }) //end $headers.each()
        $mainmenu.find("ul").css({ display: 'none', visibility: 'visible' })
    },

    init: function (setting) {
        if (typeof setting.customtheme == "object" && setting.customtheme.length == 2) { //override default menu colors (default/hover) with custom set?
            var mainmenuid = '#' + setting.mainmenuid
            var mainselector = (setting.orientation == "v") ? mainmenuid : mainmenuid + ', ' + mainmenuid
            document.write('<style type="text/css">\n'
			+ mainselector + ' ul li a {background:' + setting.customtheme[0] + ';}\n'
			+ mainmenuid + ' ul li a:hover {background:' + setting.customtheme[1] + ';}\n'
		+ '</style>')
        }
        this.shadow.enable = (document.all && !window.XMLHttpRequest) ? false : this.shadow.enable //in IE6, always disable shadow
        jQuery(document).ready(function ($) { //ajax menu?
            if (typeof setting.contentsource == "object") { //if external ajax menu
                ddsmoothmenu.getajaxmenu($, setting)
            }
            else { //else if markup menu
                ddsmoothmenu.buildmenu($, setting)
            }
        })
    },

    setHtml: function(data,id){
        $('#'+id).addClass('nav-nav');
        $('#'+id).append('<ul></ul>');
        for(var i in data){
            $('#'+id+'> ul').append('<li id="li'+ i+'"><a href="'+ data[i].url +'">'+data[i].navName + '</a></li>');
            var dataLi = data[i].navList
            if(dataLi && dataLi.length > 0){
                $('#li'+i).append('<ul id="submenu'+i+'" class="submenu"></ul>');
                for(var j in dataLi){
                    $('#submenu'+i).append('<li><a href="'+ dataLi[j].url +'"><span>'+ dataLi[j].name +'</span></a></li>')
                }
            }
        }
    }

} //end ddsmoothmenu variable

//Initialize Menu instance(s):

/*
setHtml 函数里面的 data：[
    {navName:'wa',url:'http://www.baidu.com/',navList:[
        {name: '12',url:'#'},
        {name: '12',url:'#'},
        {name: '12',url:'#'}
    ]},
    {navName:'sa',url:'http://www.baidu.com/',navList:[]},
    {navName:'fs',url:'http://www.baidu.com/'}
]*/
